Method for treating waste water containing oxygen-containing compound having phenolic hydroxyl group of carbonyl group

Abstract

A method for treating a wastewater containing oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group, including a step of adding an alkali agent to the wastewater containing the oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group to control a pH of the wastewater to 10 or more; and a step of separating a discharge in which the oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group is concentrated through distillation of the wastewater to which the alkali agent has been added.

1. A method for treating a wastewater containing oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group, which comprises the following steps:
 First step: a step of adding an alkali agent to the wastewater containing the oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group to control a pH of the wastewater to at least 10; and 
 Second step: a step of separating a discharge in which the oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group is concentrated through distillation of the wastewater to which the alkali agent has been added, and the wastewater discharged from the bottom of the distillation column is incinerated. 
 
     
     
       2. The method according to  claim 1 , wherein the wastewater containing oxygen-containing compound having a phenolic hydroxyl group or a carbonyl group, is a wastewater generated in a production process for obtaining propylene oxide by reacting an organic peroxide with propylene in the presence of a catalyst. 
     
     
       3. The method according to  claim 2 , wherein the organic peroxide is cumene hydroperoxide.